End-thrust bearing for locomotive journal boxes



June 5, 1928. 1,672,329 JVT. LUSCVOMBE ET AL END THRUST BEARING FOR LOCOMOTIVE JOURNAL BOXES Filed Ma 26', 1927 Patented June 5, 1928.

[UNITED STATES PATENT-onion.

'J'onn nLUscoMBEjor LA enanenann THOMAS WINDLE, or DECATUR, rumors;

' SAID wmnLnA-ssmnon'ro'smn LUscomBn;

END-THRUST. BEARING FOR-' LOCOMOTIVE JOURNAL BOXES.

Application fiIe'dMay 2e,

Locomotive driving= boxes and journal boxes for locomotive trucks mustbe provided on their wheel ends with wearing plates to take end thrusts.These wearing plates are usually cast on, making it a difficult andexpensive proceeding to renew them; and, since wear takes place rapidly,renewals are comparatively frequent.

The object of thepresent invention is to produce a simple and novelwearing plate construction for journal boxes on locomotives, in whichcompensation may quickly and easily be made for wear, and which permitsreplacements to be easily made when necessary.

The various features of novelty whereby our invention is characterizedwill hereinafter be pointed out with particularity in the claims; but,for a full understanding of our invention, and of its objects andadvantages, reference may be had to the following detailed descriptiontaken in connection with the accompanying drawing, wherein:

Figure 1 is a top plan view of a locomotive driving box equlpped inaccordance with the present inventlon; Fig. 2is an end view of the box,showing the end thrust wearing plate; Fig. 3 is a side view of the box,and Fig. 4 is an elevation of a shim or liner by means of whichcompensation for wear is made.

Referring to the drawing, 1 representsa locomotive journal box of anyusual or suitable construction, a driving box being illustrated.Projecting forwardly or outwardly from the lower marginal portion of theend face on the wheel end of the box are ledges 2, 2, one on each sideof the gap in which the cellar 3 is located. At each side of the box, atthe front or outer end, is a lateral projection orear 4 whose outer facelies in the plane of the end face of the box. A wearing plate 5, ofsuitable anti-friction material, is set against the end of the box,being cut away at the middle of the lower half, to provide an opening 6to permit the plate to pass the axle and to receive the cellar 3. Thewearing plate rests on the ledges 2, 2, and is secured to theprojections or ears 4 by means of bolts 7. The heads 8 of these boltsare preferably countersunk, as shown. The usual driving boxes do nothave elements corresponding to the ears or projections 4, but we addthese to the box in order to bring the fastenings beyond the zone orarea of wear 1927. Serial No. 194,517.

due to the end thrust of the wheel hub against the box. In the case ofold boxes, the ears or projections may be welded thereto; but when newboxes are being manufactured,the ears or. projections are cast. on as apart thereof. Consequently the wearing plate maybe solidly, boltedagainst the end of the box, without dangerithatthe fastenings will beeffected by reason of the wearing down of the plate. Since the platerests on the ledges, the bolts are largely relieved of the shearingstresses which they would otherwise be compelled to bear.

The plate is preferably thickened on the outer or working face, toprovide a central ring-like part 9 that projects beyond the re mainderof the plate and constitutes the wearing zone or area.

As soon as a predetermined amount of wear has taken place, compensationtherefor may be made by inserting between the wearplate and the end ofthe box a shim or liner such as indicated at 10. As further wear occurs,additional thin liners may be added, or the comparatively thin liner maybe replaced by a thicker one.

The liner preferably has the same configuration, as the wearing plate,being preferably provided, however, with an eye llat the top by means ofwhich it may be lifted. Instead of having holes for the passage of thefour bolts that fasten the wearing plate to the box, we provide theliner with long vertical slots 12, 12 extending up through the loweredge of'the same, and permitting the liner to pass the bolts withoutseparating the latter from the box.

It will thus be seen that we have provided simple and novel means fortaking care of the wear on locomotive driving or truck journal boxes dueto end thrust, compensating for such wear, and permitting easyreplacement of the wearing elements when replacements finally becomenecessary.

While we have illustrated and described with particularity only a singlepreferred form of my invention we do not desire to be limited to theexact structural details thus illustrated and described; but intend tocover all forms and arrangements which come within the definitions of myinvention constituting the appended claims.

We claim:

- 1. A locomotive journal box having on the wheel end lateral earsbeyond the end Wearing plate and said ears, and shin slotted through oneedge to permitit to. pass said bolts, the bolts being long enough topermit the shim to be inserted between the wearing plate and the box. Ij

2. A locomotive journal box having a transverse ledge projecting fromthe-lower portion of the face at the wheel end and having ahorizontalupper surface,-a wearing plate resting on said ledge and lying againstsaid face, and boltsextending between said plate and the box outwardlyfrom the end thrust wearingizone :of the plate andlying parallel withthe longitudinal axis 2 of l the journal box, the bolts being longenough to permit the insertion of'alshim: between the wearing plate andthe box:-

3. Alocomotixze joumaluboxh having a transverse *led'geprojecting fromthe: lower portion of the face at the wheel end and having a horizontalupper surface, a Wearing plate resting on said ledge and-lyingagainst'said face; and bolts extending between said plate and. the boxoutwardly from the end thrust Wearing zone of the plateandwlyingparallel with the longitudinal axis of the journal box, the bolts beinglong enough toepermit-the insert-ion oii a. shine between the wearing:plate and-thebox, and a shim slotted through oneweolge to; permit it.to. pass said bolts and rest on said. ledge;

In testimony whereof, We sign this speci float-ion;-

JOHN- T; LusGoMBEt rHoMAs; WINDLE."

